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电力工业
Discharge Current Filtering of High Voltage Pulse Power Supply Based on Singular Value Decomposition of Toeplitz Matrix
In the process of rock breaking by high-voltage pulse power supply discharging,the peak voltage can reach 200 kV and the maximum discharge energy is about 400 J.The discharge current signal is the key factor to establish the equivalent circuit model of discharge.Due to strong electromagnetic interference,the discharge current signals of different rock samples breaking contain noise signals.Aiming at the problems of complex interference and serious burr of discharge current signal,a filtering algorithm based on singular value decomposition(SVD) of Toeplitz matrix is proposed.Firstly,the Toeplitz matrix of the original discharge current signal is constructed,and then the singular value decomposition for Toeplitz matrix is carried out,and the effective current signal is reconstructed by inverse operation of singular value decomposition.The simulation results show that the smooth current signal can be obtained after filtering,with low computational complexity.
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第40届中国控制会议论文集(6)
2021年
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